The Finger Four Formation is based on the index finger, middle finger, ring finger and little finger of a hand. Its basis is a Vic Formation with the number four joining the wing of the number two (left-hand) or the number three (right-hand).
All planes fly on the same level in the Finger Four Formation, much like the traditional Vic Formation. Each plane’s wing is about next to another plane’s horizontal stabilizer.
The Finger Four Formation can be flown either on the left side or on the right side. Because of this, the leader or number one must call either a “Left-hand Finger Four Formation” or a “Right-hand Finger Four Formation”. This way, the pilots are clear on where to go.